Is it possible to debug code without Serial.print?

Using Arduino Programming Questions
#1

As I am using Serial communication to call Web API. Serial.print will be sent to the server and it is not expecting. Can we actually debug the code without using Serial.print?

#2

Perhaps use software serial on 2 other pins for the server comms, thus releasing Serial for debugging?

Or switch to an Arduino with more than 1 hardware serial?

#3

You can start by avoiding bugs by designing code correctly :slight_smile:

You can debug by reading carefully what you wrote

You can use the built in LED to signal information

you can attach a LCD to display information

you can use Software Serial and a USB to Serial adapter to get a second Serial port

You can upgrade to a more capable arduino with more than 1 Hardware Serial port

You can upgrade to an Arduino with built in Wi-Fi so that the Serial Port remains available

#4

Add an API on the server side that logs text to a file. Use it instead of conventional serial print debugging.

#5

After I got the LCD display working, I used it to show the debug information.

Paul

#6

You can use I2C to a 2nd Arduino.

#7